A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

easy

Seniority

L3

Problem

Given a non-negative integer n, return the number of 1-bits in its binary representation. Do not convert to a binary string; use bitwise operations.

Summary

How many lights are on in the binary representation?

Practice This Problem

Solve this Python problem with real code execution. DataDriven runs your Python code in a real environment and grades it automatically.